The Universal Serial Bus is about to become a little bit less "serial." The USB 3.0 Promoter Group just announced the USB 3.2 specification-a new standard that's pretty similar to USB 3.1, except that it defines multi-lane operation modes. That means USB 3.2 devices can have two lanes operating on the same cable, each running at 5 Gbps or 10 Gbps, for a total throughput of 10 Gbps or 20 Gbps. The best part about this news is that while USB 3.2 support will only appear on new devices (as usual), it doesn't actually require new cables. Your existing USB Type-C cables will (probably) work with USB 3.2 devices in full 20 Gbps mode, since they were designed from the beginning to support multi-lane operation.
The final throughput of USB 3.2 comes out to over 2 GB/sec. That amount of bandwidth is half that of Thunderbolt 3, a figure that's likely related to the fact that both specs use the same cabling. The USB 3.2 specification isn't finalised yet, so this is pretty much all the information we have. Full details of the specification should be released at the USB Developer Days event in September.
ya realize that Displayport is like 21.9Gbps or some crazy crap like that, And 10Gbit interfaces draw huge amounts of power and only recently dropped in consumption and thats JUST for data transmission and at a rate not acceptable by displays?
40gbit Ethernet cards are $100 used. That is double the speed of this new USB standard and can run to cable distances considerably longer. They have also been out a few years already. Its just home junk that has been lagging by a decade.
I am guessing USB couldnt just jump straight to 40gbit because then they would be using the exact same scheme as Thunderbolt 3 But it does seem weird to finally use multiple lanes of the current standard, and not make use of half of them.
If the phone doesn't have any real need for more IO bandwidth, what does it matter? The only high bandwidth activity it might ever do is when it acts as an MTP/PTP device and you're transferring multimedia content.
My old Note 3 had USB3, unfortunately even on a fast SDCard MTP pretty much made it moot. These days I use a app to make my phones folders browsable via my network. Much easier and actually faster because it can avoid MTP entirely and I'm on 802.11ac.
this reminds me, how will Intel implement this when DMI 3.0 bandwidth can only provide 31.44Gb/s? are they supposed to cut into the bandwidth allocated for M.2, SATAIII and GbLAN?
most of the motherboard lanes on intel's mainstream platform are simply taken from the chipset's DMI interconnect.
their CPU only has 16lanes effectively dedicated to GPU, so theres no room for that either.
AMD's AM4 boards are also limited to 31.52Gb/s bandwidth using 4x PCIe 3.0 lanes to connect the PCH.
Ryzen as well, only has 16lanes effectively dedicated to GPU, so theres no room for that either.
well USB-C is already far different from standards of USB, we already have Type-A/SS, Type-B/SS, mini-A, mini-B, micro-B/SS, and now Type-C.
on the other hand, USB-C has a lot of room to expand with regards to bandwidth, considering that it has 4lanes worth of connection (both sides has two lanes).
this means that USB-C can become the common standard while retaining a lot of it's previous compatibility with older USBs, just like how micro-B/SS took over the standard for certain devices.
Be interesting to see how External GPUs work with this setup... doubling the bandwidth might actually make having an external GTX 1070 NOT a waste of money.
When you've never owned a single USB 3.0 device in your life.
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Related Threads
?
?
?
?
?
Ask a question
Ask a question
Overclock.net
27.8M posts
541.2K members
Since 2004
A forum community dedicated to overclocking enthusiasts and testing the limits of computing. Come join the discussion about computing, builds, collections, displays, models, styles, scales, specifications, reviews, accessories, classifieds, and more!